/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import data.Auth;
import data.DataProvider;
import data.ImageHandler;
import data.PhotoCache;
import entities.ArtPhoto;
import entities.User;
import exceptions.AuthException;
import exceptions.FileStoreException;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.FileCleanerCleanup;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FileCleaningTracker;

/**
 *
 * @author bertram
 */
public class Upload extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        User user = null;
        try{
            user = new Auth().checkAuth(request);
        }
        catch(AuthException aux){
            System.out.println("not authed by upload");
        }
        try {
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);
            System.out.println("multipart?: " + isMultipart);

            FileItemFactory factory = new DiskFileItemFactory();
            ServletFileUpload upload = new ServletFileUpload(factory);
            try {
                
                ArrayList<ArtPhoto> photos = new ArrayList<ArtPhoto>();
                List items = upload.parseRequest(request);
                Iterator iter = items.iterator();

                while (iter.hasNext()) {
                    FileItem item = (FileItem) iter.next();

                    if (item.getFieldName().equalsIgnoreCase("image") && !item.getName().isEmpty()) {
                        photos.addAll(ImageHandler.getInstance().store(item, user));
                    } else {
                        System.out.println(item.getString());
                    }
                }
                String token = PhotoCache.addPhotos(photos);
                DataProvider prov = new DataProvider();
                prov.savePhotos(PhotoCache.getPhotos(token));
                response.sendRedirect("oversigt.jsp?cacheID="+token);




            } catch (FileStoreException ex) {
                System.out.println("ups, filgem problem: " + ex.getMessage());
            } catch (FileUploadException ex) {
                System.out.println("ups, filupload problem: " + ex.getMessage());
            }



        } finally {
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    public static DiskFileItemFactory newDiskFileItemFactory(ServletContext context,
            File repository) {
        FileCleaningTracker fileCleaningTracker = FileCleanerCleanup.getFileCleaningTracker(context);
        DiskFileItemFactory factory = new DiskFileItemFactory(DiskFileItemFactory.DEFAULT_SIZE_THRESHOLD,
                repository);
        factory.setFileCleaningTracker(fileCleaningTracker);
        return factory;
    }
}
